Specifically, Kraft says Nancy Lanza told Kraft "to keep an eye
on him at all times ... to never turn my back, or even to go to
the bathroom or anything like that."

Lanza has been identified as the gunman who opened fired at Sandy
Hook Elementary School on Friday,
killing 27 people, 20 of whom were children.

He also killed his mother and fatally shot himself.

Kraft told CBS News he hasn't "really processed the fact that
this happened right where I used to be, and that, 15 years ago,
it could have been me." He added that Lanza was an introverted
boy who always seemed to be in his "own world."